83% (1997)

82% (2011)

83% (2006)

77% (2016)

84% (1990)

79% (1994)

76% (2011)

83% (2000)

77% (2007)

76% (2013)

60% (1992)

75% (2005)

55% (1984)

77% (2004)

77% (1995)

71% (2009)

78% (2007)

80% (2018)

77% (2003)

81% (1982)